89409931 has 8 divisors (see below), whose sum is σ = 96409040. Its totient is φ = 82428192.

The previous prime is 89409923. The next prime is 89409941. The reversal of 89409931 is 13990498.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89409931 - 2³ = 89409923 is a prime.

It is a super-2 number, since 2×89409931² = 15988271522849522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89409911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7585 + ... + 15373.

It is an arithmetic number, because the mean of its divisors is an integer number (12051130).

Almost surely, 2^89409931 is an apocalyptic number.

89409931 is a deficient number, since it is larger than the sum of its proper divisors (6999109).

89409931 is a wasteful number, since it uses less digits than its factorization.

89409931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 89409931 is about 9455.6824714031. The cubic root of 89409931 is about 447.1589419878.

The spelling of 89409931 in words is "eighty-nine million, four hundred nine thousand, nine hundred thirty-one".